Dry concentrator.



J. WAGNER. DRY GONOENTEATOR. APPLICATION FILED MAR. 19, 1912.

Patented Nov. 26, 1912.

2 SHEETSSHBET 1.

J. WAGNER. DRY GONGENTRATOR.

APPLICATION FILED MAR. 19, 1912.

- Patented Nov. 26, 1912.

. i 'nrrrclc:

JACOB WAGNER,,UF.LOS ANGELES, CALIFORNIA, ASSIGNOR F ONE-HALF T0 MAX FACTOR, '0]? LOS ANG'ELES, CALIFORNIA.

DRY CQNCENTRATOR.

Specification of Letters Patent. Patentqgd N 26, 1912, Application filed March 19, 1912. Serial-No. 684,795.

To all whom it may concern:

Be it known that I, J AOOB. WAGNER, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles, State of California, have invented'new and useful Improvements in Dry Concentrators, of

which the following is a specification.

This invention relates to a dry concentrator particularly adapted for gold, plati- .num, silver and like heavy metals; and. it.

consists mainly in a novel combination of parts ,to utilize gravitational influence for the separation of fine gold or other valuable metal particles from the'accompanying sand or ore, quartz or the like and for forming a dry and high concentrate from which the metals may be easily separated.

' provide 'a device which will separate the gold from such black sand or from any Heretofore-so far as I am aware the devicesused for dry'concentratmg have only been able-to separate a concentrate of, say, gold and fine black sand from a larger body of sand and ore; and there has always been some difliculty in separating the gold from the fine black sand as a final operation.

The prime object of this invention is to similar heavy finep'articles and to form a higher concentrate than has heretofore been possible. I i It is also an object to provide aslmple machine of large capacity and of small size and weight, and one which may-be easily operated to produce efficient results. I

It will be seen that Iaccomplish theseobj ects resides directly in'a table mechanism on' v the concentrate is taken and the wastes are which the ore. isconcentrated; from which passed off. In combination wit-hithis table it; and, although'these extraneous machines .enter into the --general combination of my concentrator, my partidulan invention resides' more specifically in the table m'echa -nism itself The table mechanism is the nucleus around which the whole concentrator is built.' My table mechanism generally comprises a table which is tilted diagonally,

or tilted in two directions, longitudinally and transversely. The surface of the table by a mechanismrentirely new and original. H I i Broadly considered, my present inventlon valuable 'metal, these grooves extending longitudinally of the table and connecting with a diagonal sinuous groove at one end thereof. The-table is vibrated parallel to 1 the grooves which originally catch the metallic values and diagonally to the sinuous groove. into which the longitudinal surface grooves dischargefand the result of this arrangement is that the concentrate discharged into the sinuous groove is shaken diagonally .transversely of the groove while it passes down the same, thusarranging the material with: the heavier values at the bottom and the lighter refuse materials at the top. This diagonal sinuousgroove discharges into a suitable pocket which catches the majority,

of the values and allows the waste materials to pass off. Provision is made for returning to the concentrator table anymaterials which may still hold some values after passing through the pocket,- so that none of the values can be lost. This action ofthe longitudinal and sinuous diagonal groove is the fundamental feature of operation of my inventionl The precise mechanism bywhich this operation is preferably obtained will be more fully set forth in the following specification. l

The banger the material fed to the machine, 'the waste materials,- passes down the table transversely' of the grooves (in the ,line of greatest inclination) and is discharged from the table along its lowerlongitudinal" edge.- .Theinclination of the table is such that the lighter waste materials wille'asilypass over the grooves and be discharged from the table; but'the respective inclinations ."f the table are" adjustable to different kinds and characters of materials to "be; handled..' All ,of these features will be more particularlydescribed in the following specificationand are illustrated in the acc'ompanying drawings, in which v Figure 1 is an end elevation of my complete mechanism. tion illustrating a portion of the screen apparatuswhich delivers material'to the table mechanism. F igQ 3 is a plan View of the table mechanism and its directly connected F ig. 2. is a vertical seca operating mechanism, omitting the material handling machinery. Fig. 4: 1s a front elevation of the portion shown in Fig. 3. Fig. 5 is a sectional detail illustrating a portlon of the table operating or vibrating mechanism. Fig. 6 is a sectional detail taken on line-6 of Fig. 3. Fig. 7 is a partial plan view of the lower end of thetable. Fig. 8

' is an enlarged cross section. of the table surface members, showing the grooves therein.

table mechanism.

In the drawings 20 designates a suitable base frame of any'desired material and proportions and adapted to carry the supports for table 211 and the mechanism for vibrating the table andfor'providinganair pres sure. Table 20 vis of the configuration shown in F igs. 3 and 4 and is supportedon oscillating supports so as to be. inclined approximately as illustrated and so as ta be capable'of vibration from right to left in Fig. 3. Table 21 is provided with two walls 22 and 23 placed at right angles to each other and forming transverse and longitudinal edges of the table. The table is preferably so supported that the angle of inclination of transverse Wall 22 is greater than that of longitudinal wall 23. In other words, the table is preferably. tilted to a greater angle transversely than longitudinally. Opposite walls 22' and 23 is placed a diagonal wall 24-which has just inside its inner face a sinuous groove 25 which extends parallel to the wall and also diagonally of the table. Groove 25 is preferably wider at its lower than at its upperend. At the upper corner of the table is a short wall 26 at right angles to transverse wall 22 and at. the lower corner of the tableis a wall 27 arranged at about the angle shown with diagonal wall 24... \Vithin these wallsfthe surface'of the table is made up as is illustrated in Figs. 3, 4, 8 and 9. The surface is formed in a plurality of sections secured .together as is particularly shown in Fig. 8,

' and each-section is provided witha plurality of longitudinally extending grooves 30 leading from transverse wall 22 to diagonal 'sinuous groove 25. 'It 'will be seen-that these grooves are tipped at a slight anglelongitudinally, while transversely they are tipped to a" somewhat greater angle. The

' grooves are not necessarily exactly straight; v the surface members of the table maybe their lower ends.

bowed up-in their centers so that the inclination of the grooves at their upper ends (to the left in Figs. 3 and 4-) is less than at This shown exaggerate'dly in Fig. 4. Each groove is formed in'th'e upper surface of the table top members and its lower edge, the effect being to deepen the main groove along this lower edge. -The' groovesarespaced apart by portions32 and over each of these portions is placed a strip of metal 33 of the cross sectional configuration shown in Figs. 8' and. 9. These strips 33 engage grooves 31 and also the upper is provided .;wit-h'a secondary grime 31 at edges of main grooves 30, having lips 33 which project over the upper edges of the main grooves and forming deflectors against which a current of air coming through aper- The slot 33 through which air passes into the groove 30 is very tures 34 may impinge.

narrow; the lip 33. almost touches the bottom of the groove 30. This construction causes a thin stream of air to flow as indi- 1 cated in Fig. 9, passin over and not into the secondary groove 31 w iich catches and holds the values. Ape'rtures 34 lead from longitudinal grooves 35 in the lower surface of the table top and connect with awind box 36 constructed below the table top. Thiswind "box 36 is supplied with air under appropriate pressure through a connection 37 with a suitable fan 38. Thls fan is driven from an engine or other prune mover 39 through the medium of a belt or other connection 40.

Engine 39 is shown as mounted on fra1ne'20, but it may bearranged in any convenient manner. And at this point I would state that one of the-primeadvantages of my construction is the requirement of comparatively little power for its operation} The air under'pressure 'required is small and the power required for vibrating the table is also small compared with the amount of material which may table. 5 v v Mounted in bearings 50 on frame 20 is an eccentric shaft 51 carrying a pair of eccen trics 52'engaged by suitable eccentric straps 53. These eccentric straps 53 each' carry sockets 54in which connecting rods 55 are adjust'ably engaged. See Figs. 5 and 14.

Connecting rods 55 connect with similar sockets 56 at their other ends and sockets 56 are pivotally mounted at 57 on members 58. Members 58 are adjustably mounted on upright supporting rods 90 adjustably I pivoted at 91 below and. adjustably. engaged by a sleeve 92 above. Sleeve 92 pivotally mounted on. a bracket 93 which in turn'-is adjustably secured to table 20. The whole arrangement is'such that the height of either or both corners of the table may be changedbe handled per day on the to adjust its inclination in either direction.

And by adjusting the inclinations of rods 55 the horizontal vibration of the lengthened or shortened-as desired.

--"The 'finely divided ore containing the gold or other metal is fed on to the table atthe point a by a suitable mechanism, hereinafter described. The table is vibrated longitudinally of grooves 30 and table may be.

the heavier metals at once begin to settle toward the bottom and to be caught. in the grooves. The lighter materials follow the general direction indicated by the arrows and finally come against lower longitudinal wall 23 whence. they move along the wall as indicated and out through opening 61. The heavier metals settle in the-grooves 30 and tend to move longitudinally down the grooves toward diagonal sinuous groove 25.- But the materials-inthe grooves are constantly agitated by means of the air currents flowing out I through apertures 34 and thelighterof these materials are consequently throwninto the main body of lighter materials traveling transversely down t-hetable and over the grooves. lighter materials are thrown out of the. grooves until the material in the grooves This action continues and the discharges into diagonal groove 25. By this time most of the lighter materials have been removed and have traveled transversely down the table, leaving only the higher concentrates in the grooves to discharge into diagonal groove 25.. The discharge into the diagonal groove takes place as is indicated in Fig. 7 diagonally across groove 25 and against a concavity of the opposite; wall of the sinuous groove; and the vibrations be- .ing in the directions indicated by the doubleheaded arrow in Fig. 7, the materials in the groove 25 are thrown diagonallyagainst the the materials and the metallicparti'cles described. As the materials reach the lower end of the groove, they reach a point where the grcoveis widened, as at 25", and then discharge through an aperture' through end wall 27 and into a small gold saving device 70. Gold saving device '70 isbest illustrated in Figs- 7, 11 and 12. It consists mainly of a V-shaped go-ldsaving pocket 71 havingsuitable riffles 7 2 on one of its sides, through which riffles air is injected into the material in the pocket in the samemanner as air is injected through the riflies on the table surface. Air is supplied to the riffles through apertures 73 leading from'the wind box 36 into a space inclosed by a, suitable casing 74. The] apertures to the rifiies con.- nect with the space within theicasing 74 in just the same manner'as hereinbefore described for the air apertures in the table sur- ,76 and thence into a tray 77 having a screen bottom '78.- The heavier materials will pass through this screen bottom 78 into a sheet metal tray 79 and will be discharged at the lower end of the tray; while the-lighter materials will arrange themselvesabove the screen 78 and pass out through opening 80. The heavier materials passing from the tray 79 may contain a few stray gold or other metallic particles; and this material is again placed on the concentrating table so that all of the values may be extracted. The major portion of the values sinks in the pocket 71 face. At the lower end of the pocket 71 there is an outlet 75 through which "the lighter'materials pass into avertical shield and is caught in the bottom thereof, from whence it may be removed after a days run. The mechanism for handing the material to the table will now be described. I have shown a suitable framework 100, preferably made so that it may be disassembled for transphrtation, for supporting an elevator mechanism 101 and a screen mechanism 102. The elevator mechanism 101 is preferably of the bucket type and elevates the materials to a point above the upper end of the screen device. The screen ng mechanism is. composed of two screens 103 and 104 preferably hung on suitable supports 105 which allow of their oscillating vibration. Screen 103 is preferably coarser than screen 104 and the coarse materials are thereby passed off into the discharge- A board 103 at the lower end of the screen will suffice to catch any large heavy particles which may contain values. a The. screen 104 has a pocket 106 at its lower end for the purpose of catching heavier particles which are so large as to otherwise pass off into the discharge. The material passing through screen 104: runs into a chute 107 also mounted on supports 1.05-sothat it may be oscillatingly vibrated.

Vibration of the chute causes the uniform passage of materials down it under adjustable gate 108 on to the table at the position designated a. .The vibration of the chute and. of the screen is'accomplished through the medium of connecting rods attached to cranks 110,o-n shaft 111. Shaft 111 is ro- "tatably connected by a belt or other mech anism 112 to shaft-51.

From the foregoing it will be seen that I have provided a general combination. in which dry gold and'o-ther metallic ores may be handled in minimum time with a mini- .inum expenditure of energy to-obtain a veryhigh concentrate, therefrom. The funda- I mental feature'and'principle of the operation of my devlce is contained in the act1on of the grooves as above described and it is this feature which I particularly wish to secure in the following claims.

Having described mymvention, I claim: 1. In a device of the .class' described, a

table surface tilted longitudinally and transversely having a series of longitudinally extending parallel grooves, and having a sinuous discharge'groove extending diagonally across the table into and diagow nally across which the-longitudlnal grooves discharge, there being a concavity in the sinuous groove wall opposite the discharge of each' longitudinal groove.

' 2. In a device of the class described, a

table surface tilted longitudinally and transversely having a series of longitudinally extending grooves deeper along their edges which are lower on the table surface than along their edges uppermost on the table surface, and means to supply air under pressure to the grooves along their upper shallower edges only.

3. In a device of the class described, a table having surface grooves deeper along one edge than the other, and means to sup ply air pressure to the bottom of the grooves along their shallow edges only.

4. In a device of the class described, a

table having surface grooves deeper on one edge than the other, members overhanging both edges of the grooves,.and means tosupply a current of air to the bottom of the groove at its shallow edge and so directed upwardly that impinges on the overhanging member at that edge.

5. In a device of the class described, a table having surface grooves deeper on one edge than the other and having a supplemental deeper groove at its lower edge,

members overhanging 'both edges of the grooves, and means to supply a current of a r to the bottom of the groove at its shallow edge and so directed upwardlythat it impinges on the overhanging member at that edge.

edge, the overhanging member being arranged so as to direct a thin stream of air along the bottom of the groove.

'7. Ina device of the class described, a table having surface grooves deeper on one edge than the other and having a supplemental' deeperbgroove at its lower edge, a ridge on the-'fbottom of the groove at the edge of the supplemental groove, members overhanging both edges of the grooves, and means to supply a current of air to the bottom of the groove at its shallow edge and so directed upwardly that it impinges 011 the overhanging member at that edge.

8. In a device of the class described, atable surface tilted longitudinally and transversely having a series of longitudinally extending grooves deeper along their edges lower on the table surface than along their edges uppermost on the table surface, means to supply air under pressure to the grooves along their shalloweredges, the table surface also having a sinuous discharge groove extending diagonally across the table into and across which the longitudinal grooves discharge, there being a concavity in the sinuous groove wall opposite the discharge of each longitudinal groove. A '9. In a device of the class described, a

table surface tilted longitudinally and transversely having a series of longitudinally extending grooves deeper along their edges lower on. the table surface than along'their edges uppermost on the table surface, members overhanging both edges of the grooves, means to supply air .under pressure to the grooves along their shallower edges, the

table surface also having a sinuous discharge groove extending dlagonall'yacross the table into and across which the longitudinal grooves discharge, there being a concavity in the sinuous groove wall opposite'the CllS- charge of each longitudinal groove.

In witness that I claim the foregoing I have hereunto subscribed my name this 9th day of March, 1912.

. JACOB WAGNER;

WVitnesses ELWooD H. BARKELEW, MAX FACTOR. 

